<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>client</title>
</head>

<body>
  <div id="app"></div>
  <button id="btn-send">发送</button>
</body>
<script src="http://lib.baomitu.com/socket.io/3.1.2/socket.io.js"></script>
<script crossorigin="anonymous" integrity="sha512-h3aCJRk6tEHugDYUidF7GqixhzgeXSiSdq5U+5oLIJtIncSQq6eev48qqYfuTdrsH5Q1eO4IAmyJGDwzRaWNNQ==" src="http://lib.baomitu.com/vue/2.6.12/vue.common.dev.js"></script>
<script lang="vue">
  
</script>
<script src="./client.js"></script>
</html>